It's now time for our final interview of the week, and this time it's with the lovely Karen Gillan! In our exclusive chat, Karen talks about meeting Hitler, the acting challenge of 'The Girl Who Waited' and her future with Doctor Who.

Watch Karen Gillan discuss the return of Doctor Who below:

Doctor Who returns to BBC One this Saturday at 7.10pm and airs the same day at 9/8c on BBC America.